Quartet Cast Puzzle - Hanayama Level 6

Quartet Cast Puzzle - Hanayama Level 6

True bonds has always been hard to form, but once formed such bonds are eternal and hard to break. This puzzle was completed into a cast puzzle with a bond that is truly difficult to unravel. How would you go about breaking and forming this bond? There are two approaches to this puzzle and I challenge you to both! The key word is "Bond."